Thermo-synchronous steam trap

Claim 1

A STEAM TRAP COMPRISING A BODY PORTION DEFINING AN INTERIOR CONDENSATE CHAMBER, AN INLET LEADING TO SAID CONDENSATE CHAMBER, AND AN OUTLET PASSAGE, MEANS DEFINING A PASSAGE LEADING FROM SAID CONDENSATE CHAMBER TO SAID OUTLET PASSAGE AND TERMINATING IN A VALUE SEAT LOCATED ADJACENT THE TOP OF SAID CONDENSATE CHAMBER, A CONTROL CYLINDER HAVING A CLOSED BOTTOM AND DEFINING A CONTROL CHAMBER AROUND AND BELOW SAID VALVE SEAT COMMUNICATING WITH SAID INLET, SAID CONTROL CYLINDER HAVING AN EXTERIOR WALL WITH AN ANNULAR RECESS, A SCREEN FITTED AROUND THE EXTERIOR WALL OF SAID CONTROL CYLINDER AND ENCLOSING THE RECESS, MEANS DEFINING AN ACTUATING CHAMBER WITHIN SAID CONTROL CHAMBER ADJACENT THE LOWER END THEREOF AND EXPOSED TO THE CONDENSATE CHAMBER AND INCLUDING A MEMBER MOVABLE UPON CHANGES IN PRESSURE WITHIN SAID ACTUATING CHAMBER, SAID MEMBER BEING DISPOSED IN ALIGNMENT WITH AND BELOW SAID VALVE SEAT AND MOVABLE UPON INCREASE OF PRESSURE IN SAID ACTUATING CHAMBER TO CLOSE SAID VALVE SEAT AND UPON DECREASE IN PRESSURE WITHIN SAID ACTUATING CHAMBER TO OPEN SAID VALVE SEAT, AND WATER SEALED WITHIN SAID ACTUATING CHAMBER HAVING THE SAME CHARACTERISTICS AS THE STEAM OPERATING FLUID FOR MOVING SAID MOVABLE MEMBER.